<template>
    <div class="login_container">
        <div class="login_box">
        <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单区域 -->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
                </el-form-item>
                <!-- 按钮区域 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
  data () {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这是表单的验证规则
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击重置按钮，重置登录表单
    resetLoginForm () {
      // console.log(this)
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败！')
        this.$message.success('登录成功！')
        console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
    .login_container{
        background-color: #2b4b6b;
        height:100%;
    }
    .login_box{
        width:450px;
        height:300px;
        background-color:#fff;
        border-radius:3px;
        position:absolute;
        left:50%;
        top:50%;
        transform:translate(-50%,-50%);

        .avatar_box{
            height:130px;
            width:130px;
            border:1px solid #eee;
            border-radius: 50%;
            padding:10px;
            box-shadow: 0 0 10px #ddd;
            position:absolute;
            left:50%;
            transform: translate(-50%,-50%);
            background-color:#fff;
            img{
                width:100%;
                height:100%;
                border-radius:50%;
                background-color:#eee;
            }
        }
    }
    .login_form{
        position:absolute;
        bottom:0;
        width:100%;
        padding:0 20px;
        box-sizing:border-box;
    }
    .btns{
        display: flex;
        justify-content: flex-end;
    }
</style>
